Finding the Fourth Proportional to 1,761.23, 2,642.72 and 787.07
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Solution
The fourth proportional to 1,761.23, 2,642.72 and 787.07 is: 1,180.99
Step by Step Solution
- Step 1: Write the proportion equation
1,761.23 : 2,642.72 = 787.07 : x - Step 2: Convert to fraction form
1,761.23/2,642.72 = 787.07/x - Step 3: Cross multiply
1,761.23x = 2,642.72 × 787.07 - Step 4: Simplify right side
1,761.23x = 2,079,988.48 - Step 5: Solve for x
x = 2,079,988.48/1,761.23 - Step 6: Final answer
x = 1,180.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.